The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 20, 2016

Filed:

Feb. 26, 2007
Applicants:

Kinya Mizuno, Saitama, JP;

Yasushi Fujimoto, Saitama, JP;

Seiji Hamaoka, Saitama, JP;

Eiji Kittaka, Saitama, JP;

Inventors:

Kinya Mizuno, Saitama, JP;

Yasushi Fujimoto, Saitama, JP;

Seiji Hamaoka, Saitama, JP;

Eiji Kittaka, Saitama, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 61/688 (2006.01); F16H 61/04 (2006.01); F16D 21/06 (2006.01); F16D 48/02 (2006.01); F16D 48/06 (2006.01);
U.S. Cl.
CPC ...
F16H 61/688 (2013.01); F16D 48/062 (2013.01); F16H 61/0437 (2013.01); F16D 2021/0623 (2013.01); F16D 2048/0203 (2013.01); F16D 2048/0266 (2013.01); F16H 2061/0485 (2013.01); F16H 2061/0488 (2013.01); F16H 2312/02 (2013.01); F16H 2312/022 (2013.01);
Abstract

A transmission for a vehicle is provided which prevents generation of a speed change shock at the time of starting the vehicle from a neutral condition. In the transmission, hydraulic clutches are each put into a connected state according to an action of an oil pressure, and a plurality of selectively engageable speed-stage gear trains are provided so that a neutral condition can be obtained. At the time of shifting from the neutral condition, where the oil pressures in hydraulic clutches are in a lowered state, to a starting condition in which a starting gear train is engaged, pressure in the hydraulic clutch corresponding to the starting gear train is controlled by a control valve, so that the oil pressure in the hydraulic clutch is maintained in the lowered state during and immediately after a shifting operation, and is subsequently increased in response to complete engagement of the starting gear train.


Find Patent Forward Citations

Loading…